Carrier for braiding-machines



I. B. HALE.

CARRIER FOR BRAIDING MACHINES APPLICATION FILED FEB. 2, 1920.

Patented Sept. 279 WZL,

Mmm?

UNITED .STATES- PATENT OFFICE.

JOSHUA B. Hamann rnovinnncn, RH'ODE ISLAND, AssieNon, BY ilEsNE AssieN- MENTS, T0 {TEXTILE ENGINEERING COMPANY, A GOREORATION 0F RHODE ISLAND.

CARRIER :ronl aanname-MACHINES.

-Specification of Letters Patent. Patented Sept. 27, 1921,I

Application filed February 2,1920. Serial No. 355,808.

To all whom it my concern.'

Be it known that I, JosUHUA B. HALE, a citizen of the United States, and resident of the city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Carriers for Braiding-Machines, of

. which the following is a specification.

This invention relates to improvements in yarn carriers for braiding machines; and has for its object to provide such a carrier with an improved rotatable yarn tension and takeup member.

I am aware that it has heretofore been proposed to employ a rotatable yarn-takeup member, but so far as I am aware such devices have never been practically or successfully employed because of vital defects which it is the provience of my invention to overcome, said defects having resulted notably in excessive yarn breakage or undue tension of the yarn and lack of uniformity in action.

A further object of this invention is to provide a latch for controlling the action of the yarn supply, the same being actuated by the rotation of the tension and takeup member to deliver more yarn when required.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a side elevation of my improved carrier partly in section illustrating its operating mechanism.

Fig. 2- is a front view of the carrier with a portion of the tension standard removed to better illustrate the action of the let-ofi' latch.

Fig. 3- is a top view of the carrier with the cop removed.

Fig. 4- is a sectional elevation of the takeup pulley assembly in section.

Fig. 5- is a view of the face of the pulley, showing one arrangement of its actuating coil tension spring.

vIt is found in practice in the construction of carriers which are designed to run at a very high rate of speed through a serpentine raceway of a braiding machine, that quicky operating means should be provided forexerting a practically uniform tension nates the base portion of the carrier which in this particular Acase is biurcated or separated forming upper and lower guiding members connected together by a neck portion 11.4

On the upper face of the upper guidin member I have provided a boss 12 to whic a tubular cop-supporting member 13 is secured. rIhe Lipper end of this tubular member is cut away at its sides as at 14 forming arms 15, the inner ends 16 of which l are turned inwardly to engage'and support a yarn guide eye member 17.-

On this central tube is mounted a saucershaped disk 18 toothed at 19 on its periphery and to the center of which is secured a tubular member 20 which fits over and is adapted to freely rotate upon the central tube 13. By this construction the usual cop or bobbin 21 mounted on its central paper tube 22, may rest upon and be carried by this saucershaped disk, a protuberance 23 being formed` in this tube 20 for engaging and locking the paper cop tube thereto so that the cop and its support will turn in unison.

On the upper face of the base portion of the carrier have secured the lower end 24 of the tension standard 25 which is offset from the center of the base sufficiently to provide room for the cop.

In this standard I have rotatably mounted a tension or takeup member which is prefalso `on this disk 29 I have mounted an inwardly extending latch operating pin 30.

In order to provide a bearing of suitable length for the pulley hub I have fixed a collar member 31 in the standard through which this hub extends and .around 'this collar member I have Wound a coil spring 32, one end 33 of which engages the collar and. the op osite end 34 is turned inwardly to engage t e pulley 26, whereby a yielding tension is exerted on the pulley and on the yarn 35.

A radial slot 36 is formed from the center hole to the periphery of the pulley, through which the ya-rn is led as it passes through the tubular center to and around the grooved eriphery thereof.

In or er to control thel rotation of the cop-supporting disk 18, I have provided a let-off latch 37 which is pivoted near its lower end at 38 to the standard 25 and is provided with a laterally extending portion 39 which normally rests against the bottom of the standard 25 to serve as a stop to limit the movement of this latch in one direction.

-tion of the pulley under action of the spring,

but when the pulley is rotated in the opposite direction by drawing off the yarn, the pin 30 follows around and engages the back or opposite side of the latch, causing it 'to swing to the right on its pivot 38 and raise the end 40 from engagement with the teeth 19 of the disk to permit the latter to rotate with the cop thereon and release more yarn. As soon as a sufficient amount has been drawn from the cop for immediate requirements the tension of the yarn between the pulley and the braiding point, slackens somewhat and the pulley under action of its coil spring begins to rotate in the direction of the arrow, thereby removing the pin 30 from engagement with the back of the latch, which latter under pressure of its spring 41 returns to engage the teeth 19 and arrest further rotation of the bobbin. The surplus yarn or that portion drawn from the supply cop in excess of what is required for immediate use, is wound about the`pulley and is subsequently drawn therefrom as the braiding operation proceeds.

The tension on the spring 32 may be adjusted by swinging the arm 37 oil' to the right, as illustrated in dotted lines in Fig. 2, and then rotating the pulley the desired amount, after which the arm is swung back and engaged by the pin 30 and serves as a detent to limit the excessive backward rotation of the pulley.

The radial slot 36 in the face of the pulley 26 is so arranged that when the pin 30 has engaged and moved the latch sufiiciently to 'member the yarn is alternately wound about and unwound from the rotatable member, in contrast with the functioning of a reciprocating take-up device, which causes the yarn to take the form 'of a loop, and to. slide forward and backward through a guidel eye with the reciprocating action of the takeup element. In my rotary takeup device the arn slides only in the forward direction as it is drawn from the supply through .the openin in the pulley bearing, at infrequent interva s.

My rotary takeup member .permits more yarn to be wound around its periphery than is required to supply the length necessary for the outward movement of the carrier through its serpentine pathway, thus reducing the number of times it is necessary to draw from the supply. By this construction I also materially reduce the abrading action on the yarn, which is of importance particularly when using such ine and delicate yarns as silk.

My improved takeup and tension device is extremely simple, inexpensive in construction, and effective in its operation and by its use a substantially constant tension is maintained on the yarn during its serpentine 100 travel through the machine and only just the desired quantity of yarn is drawn from the cop each time afresh draft is made on the supply. l

The foregoing description is directed solely 1M toward the construction illustrated, but I desire it to be understood that'I reserve the privilege of resorting to all the'mechanical changes to which the device is susceptible, the invention being defined and limited only 11| by the terms of the appended claims:

1. A carrier for braiding machines having a rotatable yarn-takeup member provided with a yarn-guiding passageway leading 11| from its center portion to its periphery, a yarn release, and means on said takeup for operating said release when more yarn is required.

2. A carrier for braiding machines hav- 1I. ing a rotatable yarn-take-up member provided with a centrally and radially disposed yarn passageway leading to its winding surface, a yarn release, and means on said takeup for operating said release when more 125 yarn is required.

3. A carrier for braiding machines having a rotatable yarn-takeup member and provisions for delivering the arn from the supply to a point substantie 1y radially in l the line withthe periphery of said takeup member and thence to said periphery, and a yarn release operated by the rotation of said takeup to let oli' more yarn.

4. A carrier for braiding machines having a rotatable yarn-takeup member provided with a. yarn passageway leading from its axis to its winding surface, a yarn release, and means in said takeup for operating said release.

5. A carrier for braiding machines having a rotatable yarn-takeup member provided with a yarn passageway leading from its center portion to its perlphery, a yarn release adapted to be operated by said member, andstop-means for said member coacting with said yarn release.

6. A carrier for braiding machines, comprising a base, a rotatable yarn-package support on said base mounted to rotate about a vertically-disposed axis, a standard, and a spring-actuatedV takeup member rotatably mounted l:on said standard and having an axial passageway through which the yarn is led from the ackage to be wound upon the periphery oi) said member, a lyarn release, and means on said takeup for operating said release when more yarn is required.

A carrier for braiding machines, having a rotatable yarn-takeup member, a yarn release operated by the rotation of said member, in one direction, a stop on said yarn release and means whereb said stop acts through said release to limlt the rotation of said takeup memberin the opposite direction.

8. A carrier for braiding machines, having a spring actuated rotatable yarn-takeup member, a yarn-release including a latch operated by the rotation of said member, means on said takeup for engaging said stop to limit the rewinding action of said takeup member.

A carrier for braiding machines, comprising a base portion, a vertically-disposed cop support thereon, a tension standard on said base, a spring-operated yarn-tension member rotatably mounted on said standard and about which the yarn is wound, a yarn support, a let off latch controlling the movement of said support, and means whereby the dra-wing off of a predetermined amount of yarn rotates said member and operates said latch to release said support and permit the delivery of more yarn from the cop.

10. A carrier for braiding machines, comprising a base portion, a cop-support thereon, a tension standard on said base, a rotatable spring-actuated yarn-tension member on said standard around which the yarn is led from the cop, a. latch, means whereby a predetermined rotation of said member is caused to operate said latch to release said support and permit the delivery of more yarn from the cop, a stop on said latch to limit the rewinding takeup action of said rotatable member.

11. A carrier for braiding machines, comprising a base portion, a cop-support havingl a tension standard on said base, a spring-op- 'erated rotatable yarn-tension pulley mounted on said standard, said pulley having a hollow yarn guiding center and a radlallydisposed yarn guide slot in its face whereby the yarn may be led from the supply through said center and radial guide and about the periphery of the pulley before being drawn oil', a latch for controlllng they rotation of the cop-support, means whereby a predetermined rotation of the pulley moves said latch to permit the cop to deliver more yarn, said latch also serving as a stop to l1m1t the rewinding or takeup action of said pulley.

In testimony whereof I affix my s1 ature.

JOSHUA B. ALE. 

